[Insert direct download link here, ensure it's from a trusted source]

refers to a specific version of iMovie, likely version 10.3.3 (often shortened to “1033” in filenames). This version was released by Apple around 2021–2022 and was compatible with macOS Big Sur and Monterey.

Type shasum -a 256 and drag the .dmg file into the Terminal window, then press Enter.

Approximately 3.2 GB to 3.4 GB. Anything smaller is a fake.